Though the leaders are smiling in the above photo, there's reason to believe that there's plenty of tension between them. While Obama is staying at Sunnylands during the summit ("presumably in the canary yellow master bedroom where speakers pipe in the songs of the birds outdoors," The New York Timessays), Xi decided to stay at a nearby Hyatt, where he was met by protestors and supporters. While housing the Chinese delegation of over 200 people is great for the hotel, it seems a bit odd that Xi is giving Sunnylands the cold shoulder. Surely there's plenty of room for him in the 25,000 square foot home with 22 guest bedrooms?

Or maybe he's afraid of being spied on:

President Xi wont be staying at luxurious Sunnylands retreat because of eavesdropping worries instead he and his wife at nearby Hyatt